Enum SetExpectation 

#[repr(i32)]
pub enum SetExpectation {
    IfAbsent = 0,
    IfPresent = 1,
    IfValueEquals = 2,
}

Predicate for an atomic conditional set (ConditionalSet).

Variants

IfAbsent = 0

NX: apply the write only if the key has no live value

IfPresent = 1

XX: apply the write only if the key already has a live value

IfValueEquals = 2

CAS: apply only if the live value matches expected_value

Implementations

impl SetExpectation

pub fn is_valid(value: i32) -> bool

Returns true if value is a variant of SetExpectation.

pub fn from_i32(value: i32) -> Option<SetExpectation>

👎Deprecated:

Use the TryFrom<i32> implementation instead

Converts an i32 to a SetExpectation, or None if value is not a valid variant.

impl SetExpectation

pub fn as_str_name(&self) -> &'static str

String value of the enum field names used in the ProtoBuf definition.

The values are not transformed in any way and thus are considered stable (if the ProtoBuf definition does not change) and safe for programmatic use.

pub fn from_str_name(value: &str) -> Option<Self>

Creates an enum from field names used in the ProtoBuf definition.

Trait Implementations

impl Clone for SetExpectation

fn clone(&self) -> SetExpectation

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for SetExpectation

impl Debug for SetExpectation

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SetExpectation

fn default() -> SetExpectation

Returns the “default value” for a type.

impl Eq for SetExpectation

impl From<SetExpectation> for i32

fn from(value: SetExpectation) -> i32

Converts to this type from the input type.

impl Hash for SetExpectation

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for SetExpectation

fn cmp(&self, other: &SetExpectation) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for SetExpectation

fn eq(&self, other: &SetExpectation) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for SetExpectation

fn partial_cmp(&self, other: &SetExpectation) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for SetExpectation

impl TryFrom<i32> for SetExpectation

type Error = UnknownEnumValue

The type returned in the event of a conversion error.

fn try_from(value: i32) -> Result<SetExpectation, UnknownEnumValue>

Performs the conversion.